Question

if the points A(3,5) and B(1,4) lie on the graph of the line ax+by=7 find the values of a and b.

Answer 1

Step-by-step explanation:

ax+by=7 _2

Put (3,5)in it

a3+b5=7 _1

Also put (1,4) in 2

a+b4=7 __3

Subtract 2 from 3

(a3+b5=7) - (a+b4=7)

a=2

b=1